Red Bull team principal Christian Horner responded to the speculation about Max Verstappen's potential exit from the team.

Christian Horner on the status of Red Bull's in-house engine project. Christian Horner says it would be "embarrassing" for Mercedes if Red Bull comes out of the blocks with a faster and a more reliable power unit in Formula 1 next year.

Red Bull team principal Christian Horner has said Max Verstappen still intends to stay with the team for next year despite speculation about a move to Mercedes which would shake up Formula 1.